android velocityTracker滑動速度檢測器簡單使用

關鍵代碼：

@Override
public boolean onTouchEvent(MotionEvent event) {
// TODO Auto-generated method stub
VelocityTracker vt = VelocityTracker.obtain(); //1.獲得VelocityTracker
vt.addMovement(event);   //2.添加要監聽的event
vt.computeCurrentVelocity(1000);   //3.計算速率
Log.d(TAG, vt.getXVelocity()+"--"+vt.getYVelocity()); //4.得到x方向和y方向的速率

return super.onTouchEvent(event);
}

demo下載鏈接http://download.csdn.net/detail/xidianhuihui/6997427